diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig | 33 | ||||
| -rw-r--r-- | lib/Makefile | 1 | ||||
| -rw-r--r-- | lib/smbios.c | 269 |
3 files changed, 303 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 0e0d8ef..4c098c0 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -163,6 +163,39 @@ config FDT_FIXUP_PARTITIONS using partition info defined in the 'mtdparts' environment variable. +menu "System tables" + depends on !EFI && !SYS_COREBOOT + +config GENERATE_SMBIOS_TABLE + bool "Generate an SMBIOS (System Management BIOS) table" + default y + depends on X86 + help + The System Management BIOS (SMBIOS) specification addresses how + motherboard and system vendors present management information about + their products in a standard format by extending the BIOS interface + on Intel architecture systems. + + Check http://www.dmtf.org/standards/smbios for details. + +config SMBIOS_MANUFACTURER + string "SMBIOS Manufacturer" + depends on GENERATE_SMBIOS_TABLE + default SYS_VENDOR + help + The board manufacturer to store in SMBIOS structures. + Change this to override the default one (CONFIG_SYS_VENDOR). + +config SMBIOS_PRODUCT_NAME + string "SMBIOS Product Name" + depends on GENERATE_SMBIOS_TABLE + default SYS_BOARD + help + The product name to store in SMBIOS structures. + Change this to override the default one (CONFIG_SYS_BOARD). + +endmenu + source lib/efi/Kconfig source lib/efi_loader/Kconfig diff --git a/lib/Makefile b/lib/Makefile index 3842e7d..23e9f1e 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_FIT) += fdtdec_common.o obj-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o obj-$(CONFIG_GZIP) += gunzip.o obj-$(CONFIG_GZIP_COMPRESSED) += gzip.o +obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += smbios.o obj-y += initcall.o obj-$(CONFIG_LMB) += lmb.o obj-y += ldiv.o diff --git a/lib/smbios.c b/lib/smbios.c new file mode 100644 index 0000000..9808ee7 --- /dev/null +++ b/lib/smbios.c @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> + * + * Adapted from coreboot src/arch/x86/smbios.c + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <smbios.h> +#include <tables_csum.h> +#include <version.h> +#include <asm/cpu.h> + +DECLARE_GLOBAL_DATA_PTR; + +/** + * smbios_add_string() - add a string to the string area + * + * This adds a string to the string area which is appended directly after + * the formatted portion of an SMBIOS structure. + * + * @start: string area start address + * @str: string to add + * @return: string number in the string area + */ +static int smbios_add_string(char *start, const char *str) +{ + int i = 1; + char *p = start; + + for (;;) { + if (!*p) { + strcpy(p, str); + p += strlen(str); + *p++ = '\0'; + *p++ = '\0'; + + return i; + } + + if (!strcmp(p, str)) + return i; + + p += strlen(p) + 1; + i++; + } +} + +/** + * smbios_string_table_len() - compute the string area size + * + * This computes the size of the string area including the string terminator. + * + * @start: string area start address + * @return: string area size + */ +static int smbios_string_table_len(char *start) +{ + char *p = start; + int i, len = 0; + + while (*p) { + i = strlen(p) + 1; + p += i; + len += i; + } + + return len + 1; +} + +static int smbios_write_type0(u32 *current, int handle) +{ + struct smbios_type0 *t = (struct smbios_type0 *)*current; + int len = sizeof(struct smbios_type0); + + memset(t, 0, sizeof(struct smbios_type0)); + fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle); + t->vendor = smbios_add_string(t->eos, "U-Boot"); + t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION); + t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE); + t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1; + t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED | + BIOS_CHARACTERISTICS_SELECTABLE_BOOT | + BIOS_CHARACTERISTICS_UPGRADEABLE; +#ifdef CONFIG_GENERATE_ACPI_TABLE + t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI; +#endif + t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET; + t->bios_major_release = 0xff; + t->bios_minor_release = 0xff; + t->ec_major_release = 0xff; + t->ec_minor_release = 0xff; + + len = t->length + smbios_string_table_len(t->eos); + *current += len; + + return len; +} + +static int smbios_write_type1(u32 *current, int handle) +{ + struct smbios_type1 *t = (struct smbios_type1 *)*current; + int len = sizeof(struct smbios_type1); + + memset(t, 0, sizeof(struct smbios_type1)); + fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle); + t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER); + t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME); + + len = t->length + smbios_string_table_len(t->eos); + *current += len; + + return len; +} + +static int smbios_write_type2(u32 *current, int handle) +{ + struct smbios_type2 *t = (struct smbios_type2 *)*current; + int len = sizeof(struct smbios_type2); + + memset(t, 0, sizeof(struct smbios_type2)); + fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle); + t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER); + t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME); + t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING; + t->board_type = SMBIOS_BOARD_MOTHERBOARD; + + len = t->length + smbios_string_table_len(t->eos); + *current += len; + + return len; +} + +static int smbios_write_type3(u32 *current, int handle) +{ + struct smbios_type3 *t = (struct smbios_type3 *)*current; + int len = sizeof(struct smbios_type3); + + memset(t, 0, sizeof(struct smbios_type3)); + fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle); + t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER); + t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP; + t->bootup_state = SMBIOS_STATE_SAFE; + t->power_supply_state = SMBIOS_STATE_SAFE; + t->thermal_state = SMBIOS_STATE_SAFE; + t->security_status = SMBIOS_SECURITY_NONE; + + len = t->length + smbios_string_table_len(t->eos); + *current += len; + + return len; +} + +static int smbios_write_type4(u32 *current, int handle) +{ + struct smbios_type4 *t = (struct smbios_type4 *)*current; + int len = sizeof(struct smbios_type4); + const char *vendor; + char *name; + char processor_name[CPU_MAX_NAME_LEN]; + struct cpuid_result res; + + memset(t, 0, sizeof(struct smbios_type4)); + fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle); + t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL; + t->processor_family = gd->arch.x86; + vendor = cpu_vendor_name(gd->arch.x86_vendor); + t->processor_manufacturer = smbios_add_string(t->eos, vendor); + res = cpuid(1); + t->processor_id[0] = res.eax; + t->processor_id[1] = res.edx; + name = cpu_get_name(processor_name); + t->processor_version = smbios_add_string(t->eos, name); + t->status = SMBIOS_PROCESSOR_STATUS_ENABLED; + t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE; + t->l1_cache_handle = 0xffff; + t->l2_cache_handle = 0xffff; + t->l3_cache_handle = 0xffff; + t->processor_family2 = t->processor_family; + + len = t->length + smbios_string_table_len(t->eos); + *current += len; + + return len; +} + +static int smbios_write_type32(u32 *current, int handle) +{ + struct smbios_type32 *t = (struct smbios_type32 *)*current; + int len = sizeof(struct smbios_type32); + + memset(t, 0, sizeof(struct smbios_type32)); + fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle); + + *current += len; + + return len; +} + +static int smbios_write_type127(u32 *current, int handle) +{ + struct smbios_type127 *t = (struct smbios_type127 *)*current; + int len = sizeof(struct smbios_type127); + + memset(t, 0, sizeof(struct smbios_type127)); + fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle); + + *current += len; + + return len; +} + +static smbios_write_type smbios_write_funcs[] = { + smbios_write_type0, + smbios_write_type1, + smbios_write_type2, + smbios_write_type3, + smbios_write_type4, + smbios_write_type32, + smbios_write_type127 +}; + +u32 write_smbios_table(u32 addr) +{ + struct smbios_entry *se; + u32 tables; + int len = 0; + int max_struct_size = 0; + int handle = 0; + char *istart; + int isize; + int i; + + /* 16 byte align the table address */ + addr = ALIGN(addr, 16); + + se = (struct smbios_entry *)addr; + memset(se, 0, sizeof(struct smbios_entry)); + + addr += sizeof(struct smbios_entry); + addr = ALIGN(addr, 16); + tables = addr; + + /* populate minimum required tables */ + for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) { + int tmp = smbios_write_funcs[i](&addr, handle++); + max_struct_size = max(max_struct_size, tmp); + len += tmp; + } + + memcpy(se->anchor, "_SM_", 4); + se->length = sizeof(struct smbios_entry); + se->major_ver = SMBIOS_MAJOR_VER; + se->minor_ver = SMBIOS_MINOR_VER; + se->max_struct_size = max_struct_size; + memcpy(se->intermediate_anchor, "_DMI_", 5); + se->struct_table_length = len; + se->struct_table_address = tables; + se->struct_count = handle; + + /* calculate checksums */ + istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET; + isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET; + se->intermediate_checksum = table_compute_checksum(istart, isize); + se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry)); + + return addr; +} |